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		<title>219971343张燚</title>
		<h2>等腰三角形</h2>
			<script>
				  for(var i = 1;i<6;i++){
		          for(var j = 1;j<6-i;j++){
					 document.write("&nbsp")
					        }
			      for(var x = 1;x<=i;x++){
					 document.write("*&nbsp")
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					 document.write("<br>")
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		<h2>菱形</h2>
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            for(var i = 1;i<=3;i++){
			        for(var j = 1;j<=6-i-i;j++)
					{
			            document.write("&nbsp")
			        }
					for(var k = 1;k<=2*i-1;k++)
					{
						document.write("*&nbsp")
					}
					document.write("<br>")
			    }
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			<script>
			    for(var i = 1;i<=2;i++){
			        for(var j = 1;j<=i+i;j++){
			            document.write("&nbsp")
			        }
					for(var k = 1;k<=5-i-i;k++){
						document.write("*&nbsp")
					}
					document.write("<br>")
			    }//219971343张燚
			</script>
		<h2>平行四边形</h2>
			<script>
				for(var i = 1;i<6;i++){
				 for(var j = 1;j<6-i;j++){
						 document.write("&nbsp")
						        }
				 for(var k = 1;k<6;k++){
						 document.write("*&nbsp")
						        }
						 document.write("<br>")
						    }
			</script>
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